This Royal Oak Perpetual Calendar is designed in a 41mm stainless steel case and octagonal bezel. It features the 'Grande Tapisserie' pattern on the silver-toned dial equipped with four counters displaying the day, date, month, astronomical moon, week of the year and leap year indication. It is protected by a sapphire-crystal and is complimented by a stainless steel bracelet with AP folding-clasp.